domestic top-grossing movies of 2009 were Avatar and Transformer2: Revenge of the Fallen. The movie Transformers 2 grossed $26.9 million less than Avatar, and together the two films took in $831.1 million. How much did each of these movies earn?

Solution:

                    A + T = 831.1

                    T = A - 26.9

                2A = 831.1 + 26.9

                A = $ 429 million

                 T = $ 402.1 million